Abstract

A remote detection method for measuring the infrared reflectance from chlorinated hydrocarbons in soils is demonstrated. The method uses a 12-m-long, field-ruggedized, chalcogenide fiber to transmit IR reflectance data to a remotely located FT-IR spectrometer. Minimum observable signal corresponding to 250 ppm of trichloroethylene (TCE) in sand was measured with the system. Suggestions for improving the threshold detection limit are offered.

Detection of low levels of trichloroethylene vapor with Raman spectrometry

K. J. Ewing, T. Bilodeau, G. Nau, I. Schneider, and I. D. Aggarwal
Appl. Opt. 33(27) 6323-6327 (1994)

Tunable infrared laser detection of pyrolysis products of explosives in soils

J. Wormhoudt, J. H. Shorter, J. B. McManus, P. L. Kebabian, M. S. Zahniser, W. M. Davis, E. R. Cespedes, and C. E. Kolb
Appl. Opt. 35(21) 3992-3997 (1996)

Combination of laser-induced fluorescence and diffuse-reflectance spectroscopy for the in situ analysis of Diesel-fuel-contaminated soils

Hans-Gerd Löhmannsröben and Lars Schober
Appl. Opt. 38(9) 1404-1410 (1999)

Infrared hollow optical fiber probes for reflectance spectral imaging

Chenhui Huang, Saiko Kino, Takashi Katagiri, and Yuji Matsuura
Appl. Opt. 54(14) 4602-4607 (2015)

Hollow-fiber-based flexible probe for remote measurement of infrared attenuated total reflection

Yuji Matsuura, Saiko Kino, and Takashi Katagiri
Appl. Opt. 48(28) 5396-5400 (2009)